Boiler-tube cleaner



ARTHUR W. oHEsTERToN, oF BOSTON, MASSACHUSETTS.

BOI LER-TUBE CLEAN ER.

SPECIFICATION forminglpart of Letters Patent N o. 492,935, dated March 7, 1893.

Appncaanned May 2s', 1892. serial No. 434,042. (No model.)

To ZZZ whom it may concern..-

Be it known that I, ARTHUR W. CHESTER- TON, of Boston, in the county of Suffolk, State of Massachusetts, have invented certain new and useful Improvements in Boiler- Tube Cleaners, of which thefollowingis a description sufficiently full, clear, and exact to enable any person skilled in the art or science to which said invention appertains to make and use the same, reference being had to the accompanying drawings, forming part of this specication, in Which- Figure lisa side elevation of my improved tube-cleaner; Fig. 2 a vertical longitudinal Section of the nozzle; Fig. 3 a sectional view partly broken away, of the rotary head; and Fig. 4t an end elevation of the same.

Like letters of reference indicate corresponding parts in theditferent figures of the drawings.

My invention relates especially to steam flue cleaners for boilers; and it consists in certain novel features hereinafter fully set forth and claimed, the object being to produce a simpler, cheaper and more eiective device of this character than is now in ordi nary use.

In the drawings, A represents the body of the cleaner'which comprises a pipe or section of tubing provided with a handle, B, at one end. Near. the handle there is a nipple, b, to which a flexible pipe, CZ, is connected vwhich may lead to any suitable steam supply.

C, represents the nozzle considered as a The body or casing,f, of the nozzle is tubular and interiorly tapped and screwthreaded at, g, to receive the threaded outer end. of the tube, A. The opposite end of the casing-,J2 is enlarged and exteriorly rabbeted or grooved to enter the boiler-tube or flue. A tube, 7L, is secured within 'the connection, g, and projects within the casing. A series of holes, t', are formed in the side of said tube and its inner end is closed by a head, j, which is tappedto receive a screw, 7s, Whereby a Washer, m, is secured, said Washer serving to hold the rotary head, D, in position on said tube. The head, D, is tubular and litted vto rotate freely on the tube, h. Interiorly said head is provided with anannular groove,l

p, which registers With `the openings, z', of

the tube When'in position. Connecting the groove, p, with the outer end of the headand opening therethrough, there is a series of ports, fr, all inclined at the same angle to said groove or the axial line of the head.

In use the'nozzle'is turned onto the hollow .i

body, A, and its mouth, t, inserted inthe flue.l Steam being admitted through the pipe, (Z, it passes into the tube, 7L; through its opening, z', into the groove, p, of the rotary head, D. Thence it passes through the inclined ports, r, in the flue. The pressure of the steam delivered atan angle in this manner immediately imparts a rapid rotary movement to the head, D. rlhisaction'causes the steam delivered into the Hue under pressure to take a spiral motion.I i

In the use of steam cleaners of this class a portion of steam condenses in the iiue or boiler tube and the moisture thusforlnedv combined with the soot in said Hue cakes or bakes onto the tube and .forms a scale.

This is extremely difficult to remove by steam delivered directly to the flue. the rotary motion described lateral pressure is delivered'against the scale readily detaching it and cleaning the fluemuch more thoroughly than I Yfind possible by the ordinary methods.

Instead of the ports, r, being formed in the head, D, I canenter the groove, p, by tubes `projecting from the head and arranged at angles similar to said practically the same,

ports, the result being butI deem the con- By imparting struction described, however, the more convenient and less liable to or clogged.

To clean the nozzle or head, by turning out the screw, k, the Washer, m, can be detached and the head removed in a manner which Will be readily understood without a more explicit description.

become inoperative Having thusexplained my'invention, what .I claim is-` fl. `In a. boiler tutte cleaner, a nozzle comprising a casing; a tube in the Supply thereof provided' with Steam openings; a loose head 2 I v i 492,935

on said tube provided with a groove registeropenings, fzf, sind head', j," the head, D, having ing with ysaid openings and inclinedv ports the groove, 1J, and inclined po1ts,7,said head 1c leading from the groovethrough the. wall of. being mounted to rotate on the-tube, substansaid head whereby steam may be delivered tiaily 'as described. v to theldiseharge of Said easing and a rotary v AR'l`I1UR' \V. CIIES'FERTON. movement imparted to said heed. v\'\'ituesses:

2. The nozzle, C, comprising the casing, f; CHARLES lV. CURRY, the tube, h, `secured thereinl provided with O. M. SHAW. 

